Frank m



(No Model.) 2 Sheets-Sheet 1..

P. M. MoGULLA. PAPER BAG MACHINE.

No. 407,300. 0 Patented July 10, 1889.

.i'tmizz; 'fi

b his A103." M

Nv PZTERS mn-Ukhognpher. WiuMnglan, DJ}.

(No Model.) 2 Sheets-Sheet 2.

P. M. McGULLA.

PAPER BAG MACHINE.

No. 407,300. Patented July 16, 1889.

FIG-.4-

.ili|nmllll Q Fl 05-. e Wiines'ses: T do Inventor: 5'6 a 5- I Frank M.M GuHa G 4W y s g- N. PETERS, FhoiD-Liihugnphar, Wilh rgkm. D.,C.

UNITED STATES PATENT OFFICE.

FRANK H. LEAOH, OF SAME PLACE.

PAPER-BAG MACH I N E.

SPECIFICATION forming part of Letters Patent No. 407,300, dated July 16, 1889. Application filed Jcptemher 14, 1888. Serial No. 285,402. (No model.)

To all whom it may concern.-

Be it known that I, FRANK M. MCCULLA, of the city and county of Philadelphia, and State of Pennsylvania, have invented an Improvement'in Paper-Bag Machines, of which the following is a specification.

My invention relates to paper-bag machines; and it consists of certain improvements, which are fully set forth in the following specification and shown in the accompanying drawings, which form a part thereof.

Myinvention is particularly intended for the manufacture of that class of bags in which the tube or body part is formed with bellows side folds and with what is known as a square bottom. It is impossible, owing to the construction of these bags, to secure the bellows folds at the bottom with a pasted seam, since their lower edges are under one of the faces of the tube. When the bag is opened, the necessary folds resulting in the bottom cover the edges of the bellows-fold portions and form a fairly tight bottom. The lower edges of the bellows fold are, however, unpasted, and if the hand is thrust into the bag the finger can be readily pushed through the opening left between these unpasted edges, and in fact the entire bellows fold can be laterally pushed out, destroying the utility of the bag. \Vhile these defects do not in the majority of cases exhibit themselves, they nevertheless exist and are decidedly objectionable.

The object of this invention is to produce a bag in all material respects and characteristics the same as the present so-called Union Square Bag, but without the objectionable feature at present possessed by that bag, as pointed out above.

By my improved machine I form my tube in precisely the same manner as in the old form of square bags, with the exception thatfaces of the tube, so that when the bag is opened every portion of the bottom is sealed tightly and there is no possibility of the con-' tents escaping.

My invention is concerned with the mechanism by which the bottom edges of the bag is cut, and is adaptable to any of the ma chines now in existence by which the Union square bag may be made-such as the old Union-bagmachine or the Stillwell machine, the latter of which is the one part of which is shown in the drawings to illustrate my invention.

Figure 1 is a sectional view on line co m of Fig. 2 of such a paper-bag machine embodying my improvements. Fig. 2 is a plan View of the same. Fig. 3 is an end View of the same, showing the cutting mechanism. Fig. at is a view of the detached cutter. Fig. 5 is a plan view of a portion of apaperbag, showing the manner in which its bottom edges are are made by the action of two sets of rollers O C and O O.

D is an arm or knife to fold over the sides of the tube upon each other.

D D are the presser-rollers for creasing and flattening the edges of the bag-tube, and are located at or near an opening in the end of the table A and run in contact with each other, but having a central portion slightly recessed to allow the tongue E of the formerplate to extend between them without strain upon the paper of the tube. The end of this tongue is formed into the cutter F, preferably having the usual serrated edge.

G are two bellows-fold cutters extending from frames H on each side of the opening in the table A, above the cutter F, and adj ustable to bring its cutting-edge to or from the cutting-edge of the said cutter F by means of the slots h and the adjusting-screws g. Secured at its ends to these frames H is the upper stationary cutter I, preferably inclined downward and adjustable toward the edges of the side cutters G by means of the slots 1' and adj usting-screws j.

In practice I prefer to use a plate J to secure the cutter I to the frames H to give greater rigidity thereto. Asshown in Fig. 2, these cutters are arranged a slight distance in front of each other, and this distance may be regulated by means of the adj Listing-screws, as heretofore set out, to vary the amount of lap on the tube to receive paste. These cutters are all preferably provided with serrated edges and are located in different planes, with a slight space intervening sufiicient to admit the paper tube, which is fed to the cutters by the rollers D D. The lower surface of the tube is under the cutter F, and the side cutters G G extend into the bellows side folds, so that the lower edges of the bellows fold are under the side cutters G, while the upper edges and the upper surfaces of the tube are under the top cutter I.

K is awheel or rotating disk journaled to the side of the frame A and provided with an arm L, extending about the end of the table, so that when this disk rotates in the direction indicated by the arrow in Fig. 1 the arm L, striking upward, forces the paper tube against the cutters, and it is cut in the manner shown in Figs. 5 and 7. Each portion of the paper is cut by that cutter below which it was located, the lower edge a by the lower cutter F, the lower edges 12 of the bellows folds by the intermediate side cutters G G, and the upper edge 0 of the bellows folds and the upper portion cl of the tube by the upper cutter I. As this lower edge of the bellows folds is thus exposed between the upper and lower edges a (I, it will receive paste and become sealed in the manner desired. From the cutters the bags are conducted by the rollers M to the pasting devices and treated in the usual manner.

My invention is concerned only with the cutting mechanism and lies in the use of the intermediate side cutters G G, whereby the lower edge of the bellows folds is cut so as to be exposed between the upper and lower edges of the bottom of the bag, and is thereby adapted to receive paste, and in such other points of construction of the cutting mechanism as are dependent upon said cutters.

\Vhen the tube has been cut off by the arm or beater L, the short length will be held in the feed-rollers M M. The paste-knife R receives paste from roller S and descends, applying the paste to the edges a, b, and d of the tube. The folding-knife T then descends and folds over the bottom, feeding the completed bag through the pressure-rollers U, which pass it on to the apron \V. These devices are well known and need no further description.

I do not limit myself to the mere details of construction.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a paper-bag-tube machine, the combination of a lower cutter and an upper cutter for the outer folds of the paper tube and two intermediate side or bellows-fold cutters, the lower, upper, and side cutters being arranged stationary in different planes and slightly separated for the passage of the paper, the edges of one of said outer cutters pro ect ng beyond the edges of said intermediate side or bellows fold cutters, with a movable beater or cutter transversely movable across the cutting-edges of the stationary cutters.

2. In a paper-bag-tube machine, the combination of a lower cutter and an upper cutter for the outer folds of the paper tube and two intermediate side or bellows-fold cutters, the lower, upper, and side cutters being arranged stationary in different planes and slightly separated for the passage of the paper, having their cutting-edges projecting beyond each other and the edges of one of said outer cutters projecting beyond the edges of said intermediate side or bellows-fold cutters, with a movable beater or cuttertransversely movable across the cutting-edges of the stationary cutters.

In a bag-tube machine, the combination of forming devices for folding the paper into a tube having bellows side folds with cutters for transversely severing the top and bottom layers of the tube,two side cutters projecting into the bellows folds, and a transversely-moving heater or cutter to force the layers of paper forming the bellows fold against the cutters to sever them at each side of the tube.

4. In a paper-bag machine, the combination of bellows-fold-tube-making mechanism with a stationary cutter for each of the outer layers of the tube and two side cutters for the bellows-fold layers, and in which said cutters have their cutting-edges projecting beyond each other, substantially as set out, the edges of one of said cutters for the outer layers projecting beyond the edges of the side cutters for the bellows side folds and a transversely-movable cutter or beater adapted to move past the cutting-edges of the firstmentioned cutters to sever the tube.

5. In a paper-bag machine, the combination of bellows-fold-tube-making mechanism with a stationary cutter for each of the out-er layers of the tube and two side cutters for the bellows-fold layers, in which said cutters have their cutting-edges projecting beyond each other, substantially as set out, the edges of one of said cutters for the outer layers pro-- jecting beyond the edges of the side cutters for the bellows side folds, a transverselymovable cutter or beater adapted to move past the cutting-edges of the first-mentioned cutters to sever the tube, and past-ing and folding devices to apply paste and fold over the bottom of the tube.

(3. In a paper-bag machine, the combina- ITO tion of bellows-fold-tube-forming devices with stationary transverse cutters for the top and bottom layers of the tube and two lateral or side cutters adapted to extend into the bellows folds of the tube and arranged between the other cutters, means to adjust said side or bellows-fold cutters, and a transversely-movable beat r or cutter to sever the tube.

7. In a paper-bag machine, the combination of bellows-fold-tube -for1ning devices with stationary transverse cutters for the top and bottom layers of the tube made relatively adjustable longitudinally to separate or reduce the space between their cutting-edges, and two lateral or side cutters adapted to extend into the bellows folds of the tube and arranged between the other cutters, means to adjust said side or bellows-fold cutters, and a transversely-movable beater or cutter to sever the tube.

S. The combination of the lower outer cutter F, upper outer cutter I, intermediate side cutters G G, arranged with their cuttingedges projecting beyond each other, as set out, with the edges of one of said outer cutters projecting beyond the edge of said intermediate side cutters, and a rotary beater L, adapted to be moved past said cutters F, I, and G to sever the tube.

9. In a paper-bag machine, bellows-foldtube forming and guiding devices, in combination with independent cutters, substantially as set out, for severing transversely the top, bottom, and bellows-fold layers of the tube, the edges of one of the cutters for the outer layers projecting beyond the edges of the cutter for the bellows fold.

10. In a paper-bag machine, bellows-foldtube forming and guiding devices, in combination with independent cutters, substantially as set out, for severing transversely the top, bottom, and bellows-fold layers of the tube at different places in the length of the tube to expose all three layers from one side of the tube, the edges of one of the cutters for the outer layers projecting beyond the edges 1 of the cutter for the bellows fold.

, In testimony of which invention I hereunto set my hand.

FRANK M. MCCULLA. Witnesses:

R. M. HUNTER, ERNEST HOWARD HUNTER. 

